function_types 0.0.2

  • Example
  • Installing
  • Versions
  • 80


Defines the function types with different arities via typedefs.

Version: 0.0.2

import 'package:function_types/function_types.dart';

void main() {
  Func2<int, int, int> mul = (int a, int b) => a * b;
  print(mul(3, 2));

  add = (int a, int b) => a + b;
  print(add(3, 2));

Func2<int, int, int> add;


  • The source code is formatted


  • Initial release


import 'package:function_types/function_types.dart';

void main() {
  int add(int a, int b) => a + b;

  var op1 = new Add<int>(add);
  print(op1.add(3, 2));

  var op2 = new Sub<int>((int a, int b) => a - b);
  print(op2.sub(3, 2));

  Func2<int, int, int> mul = (int a, int b) => a * b;
  print(mul(3, 2));

  toString = (Object o) => "String($o)";

Func1<Object, String> toString;

class Add<T> {
  Func2<T, T, T> _add;

  Add(T add(T a, T b)) {
    _add = add;

  Func2<T, T, T> get add => _add;

class Sub<T> {
  final Func2<T, T, T> sub;


Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  function_types: ^0.0.2

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter packages get

Alternatively, your editor might support pub get or flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:function_types/function_types.dart';
Version Uploaded Documentation Archive
0.0.2 Aug 11, 2018 Go to the documentation of function_types 0.0.2 Download function_types 0.0.2 archive
0.0.1 Jul 27, 2018 Go to the documentation of function_types 0.0.1 Download function_types 0.0.1 archive
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Learn more about scoring.

We analyzed this package on Dec 5, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.1.0
  • pana: 0.12.7


Detected platforms: Flutter, web, other

No platform restriction found in primary library package:function_types/function_types.dart.

Health issues and suggestions

Document public APIs (-10 points)

18 out of 18 API elements (library, class, field or method) have no adequate dartdoc content. Good documentation improves code readability and discoverability through search.

Maintenance suggestions

Package is pre-v0.1 release. (-10 points)

While there is nothing inherently wrong with versions of 0.0.*, it usually means that the author is still experimenting with the general direction of the API.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.60.0 <3.0.0